回复:400PLC的指示灯全部都闪

rexcook

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普通 普通 如何晋级?

发布于 2012-01-17 13:34:20

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刚才有出现了这个错误,我查到了错误缓冲区里面的错误代码是4550
帮助里面是这样说的
“Cause:
The internal CPU firmware has detected an inconsistent status that can also result from a firmware error on the CPU.

Effect:
This status is indicated by all the CPU LEDs flashing. In this status, the program is no longer executed and no further operations are possible. Outputs are deactivated.

To correct or avoid errors:
Normally the CPU is operational again after turning it off and on again, or with more serious errors after turning it off and on again without battery backup (in either case the CPU must first be switched to STOP). The detailed information of the diagnostic buffer entry contains a hexadecimal code with the comment "No relevance for user". Note down this code and contact the manufacturer.

Make sure that there is not simply a mechanical problem by removing and reinserting the CPU.
The CPU is defective if the error occurs again after power on without battery backup.
In an M7 system:
The event can also be indicated on a function module (FM). ”

看起来是firmware里面有问题,不知如何升级cpu的firmware,会有无法再次开机的风险吗
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